Author: John Coffey
Date: 12:13:41 09/21/98
Go up one level in this thread
On September 21, 1998 at 14:58:33, John Coffey wrote: >If on the otherhand I search the first move that wins a piece, and all but one >of my opponents responses regains material, then I could do a null move after >all but one of my opponent's responses, thus saving close to 80 or 90%. Maybe >this is the piece of the puzzle that I am missing? > >Thanks for the response. Best wishes, > >John Coffey Errr... maybe not. If all but one of my opponents moves fail to regain a piece then doing a null move will effectively gives the other side two moves in a row and then they can regain the piece anyway, thus defeating the null move. So the null move must work when the opponent has no threats at all. It is hard for me to see this happening often enough to get such a dramatic *exponential* reduction in the tree size. Again I will take your word for it. I am assuming that we only try the null move when we have gained material? This is what I have read, but maybe you try null moves at other times? If so then this would make more sense to me. John Coffey
This page took 0.02 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.